The customer had wood blinds topped with draperies in their son's room. The customer was concerned because the wood blinds were blacking out enough light. Wood blinds are only considered "room darkening" because light leaks between the slats. The difference between "room darkening" and "black out" is substantial in terms of how much light they block. We measured the windows and told them that black-out Hunter Douglas Duettes Honeycomb Shades would be their best option. They were on a tight budget, so we suggested the Hunter Douglas Applause Black Out Honeycomb Shades. There was enough room for the blinds to clear the handles of the 2 sets of French Doors in the room, and the cordless lift mechanism works great to keep the shade from banging on the handles when raising or lowering the shade.  We wanted to minimize the light gaps as much as possible, so we calculated the standard deduction Hunter Douglas takes off the Duette fabric width (Hunter Douglas does this because the headrails are always a little wider then the material). We then added back this deduction to ensure the shade material could get as close to the handle plate as possible to maximize the darkness in the room.  She was thrilled with the result.